BPOPS203 PRINCIPLES OF PROGRAMMING USING C LAB Manual.pdf

1st year Principles of Programming using C Lab programs

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PRINCIPLES OF PROGRAMMING USING C LABORATORY [ BPOPS203 ]




Dr. A. Syed Mustafa, HKBKCE. Page 1 of 25 BPOPS Lab Programs








PRINCIPLES OF PROGRAMMING
USING C LABORATORY [ BPOPS203]





















by:

Dr. A. Syed Mustafa
Prof. Madhusudhana














DEPARTMENT OF INFORMATION SCIENCE


AND ENGINEERING

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HKBK COLLEGE OF E

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Dr. A. Syed Mustafa, HKBKCE. Page 3 of 25 BPOPS Lab Programs




PRINCIPLES OF PROGRAMMING USING C LABORATORY [ BPOPS203 ]

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Dr. A. Syed Mustafa, HKBKCE. Page 4 of 25 BPOPS Lab Programs



1. Simulation of a Simple Calculator.
/*Simulation of a Simple Calculator*/

#include <stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
char op;

printf("Simple Calculator\n");
printf("Enter the Expression\n");
scanf("%d%c%d",&a,&op,&b); /* read input eg. 2+3 */
switch(op)
{
case '+': c=a+b; /*add 2 numbers*/
break;

case '-': c=a-b; /*subtract 2 numbers*/
break;

case '*': c=a*b; /*multiply 2 numbers*/
break;

case '/': c=a/b; /*divide 2 numbers*/
break;

case '%': c=a%b; /*find reminder of 2 numbers*/
break;

default: printf("Invalid Expression\n");
}

printf("%d\n",c); /* display result*/

getch();
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 5 of 25 BPOPS Lab Programs


2. Compute the roots of a quadratic equation by accepting the coefficients. Print
appropriate messages.


#include <stdio.h>
#include<conio.h>
void main()
{
int a,b,c,d;
float r,r1,r2;

printf("Enter the Coefficients a,b and c\n");
scanf("%d%d%d",&a,&b,&c); /* read input - ax^2+bx+c */

if(a*b*c==0)
{
printf("Please enter non zero values\n");
getch();
exit(0);
} /*end if*/

d=b*b-4*a*c;
r=2*a;
if(d==0)
{
printf("Roots are Real and Equal\n");
r1=r2=-b/r;
printf("Root 1: %.2f, Root 2: %.2f\n",r1,r2);
}
else if(d>0)
{
printf("Roots are Real and Distinct\n");
r1=(-b+sqrt(d))/r;
r2=(-b-sqrt(d))/r;
printf("Root 1: %.2f, Root 2: %.2f\n",r1,r2);
}


else
{
printf("Roots are Imaginary\n");
r1=-b/r;
r2=sqrt(-d)/r;
printf("Root 1: %.2f+i%.2f, Root 2: %.2f-i%.2f\n",r1,r2,r1,r2);
} /*end else*/

getch();
}/* end main*/

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OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 7 of 25 BPOPS Lab Programs


3. An electricity board charges the following rates for the use of electricity: for the first 200
units 80 paise per unit: for the next 100 units 90 paise per unit: beyond 300 units Rs 1
per unit. All users are charged a minimum of Rs.100 as meter charge. If the total amount
is more than Rs 400, then an additional surcharge of 15% of total amount is charged.
Write a program to read the name of the user, number of units consumed and print out
the charges.

#include <stdio.h>
#include<conio.h>
void main()
{
int n,mc=100;
float bill;
char name[50];

printf("Enter the Name of the User\n");
scanf("%s",name);
printf("Enter the number of units electricity consumed\n");
scanf("%d",&n);

if(n<=200)
bill=n*0.8;
else if(n<=300)
bill=160+(n-200)*0.9;
else if(n>300)
bill=250+(n-300)*1;

bill=bill+mc; /* meter charge added with bill*/

if(bill>400)
bill=bill+bill*0.15;

printf("Consumer Name: %s\n",name);
printf("No. of Units Consumed: %d\n",n);
printf("Total Bill Amount Rs. %.2f\n",bill);

getch();
}
OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 8 of 25 BPOPS Lab Programs


4.

#include <stdio.h>
#include<conio.h>
void main()
{
int n,i,j,k,m;
printf("\nEnter the value of n:\n");
scanf("%d",&n);

for(i=1;i<=n;i++)
{
for(j=1;j<=n-i;j++) /*print spaces*/
printf(" ");
for(k=1; k<=i ; k++) /*print increment numbers*/
printf("%d ",k);
for(m=i-1; m>0; m--) /*print decrement numbers*/
printf("%d ",m);
printf("\n");
} /*end for*/

getch();
}/* end main*/

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 9 of 25 BPOPS Lab Programs


5. Implement Binary Search on Integers.

#include <stdio.h>
#include<conio.h>
void main()
{
int a[100],n,s,e,mid,key,f=0,i;
printf("\nEnter the total no. of elements:\n");
scanf("%d",&n);
printf("\nEnter the elements in ascending order\n");
for(i = 0 ; i < n ; i++) /*read all elements*/
scanf("%d",&a[i]);

printf("\nEnter the element to be searched:\n");
scanf("%d",&key);

s=0; /*start index*/
e=n-1; /*ending index*/
while(s<=e)
{
mid=(s+e)/2; /*middle index*/
if(key==a[mid]) /* comparing key value with middle value*/
{
f=1;
break;
}
if(key>a[mid])
s=mid+1;
else
e=mid-1;
} /* end while*/

if(f)
printf("Search Successful\n");
else
printf("Search UnSuccessful\n");

getch();
}/* end main*/
OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 10 of 25 BPOPS Lab Programs


6. Implement Matrix multiplication and validate the rules of multiplication.

#include <stdio.h>
#include<conio.h>
void main()
{
int a[10][10],b[10][10],c[10][10];
int m,n,p,q,i,j,k;

printf("\nEnter the order of the matrix A:\n");
scanf("%d%d",&m,&n);

printf("\nEnter the order of the matrix B :\n");
scanf("%d%d",&p,&q);

if(n!=p) /*comparing colmof Matrix A with row of Matrix B*/
{
printf("Matrix Multiplication is not possible\n");
getch();
exit(0);
} /* end if*/

printf("\nEnter the elements of matrix A\n");
for(i = 0 ; i < m ; i++)
for(j = 0 ; j < n ; j++)
scanf("%d",&a[i][j]);

printf("\nEnter the elements of matrix B\n");
for(i = 0 ; i < p ; i++)
for(j = 0 ; j < q ; j++)
scanf("%d",&b[i][j]);

for(i = 0 ; i < m ; i++)
for(j = 0 ; j < q ; j++)
{
c[i][j]=0;
for(k = 0 ; k < n ; k++)
c[i][j]= c[i][j]+a[i][k]*b[k][j];
}/*end for j loop*/

printf("\nMATRIX A \n");
for(i = 0 ; i < m ; i++)
{
for(j = 0 ; j < n ; j++)
printf("%d\t", a[i][j]);
printf("\n");
}/*end for i loop*/

printf("\nMATRIX B \n");

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Dr. A. Syed Mustafa, HKBKCE. Page 11 of 25 BPOPS Lab Programs


for(i = 0 ; i < p ; i++)
{
for(j = 0 ; j < q ; j++)
printf("%d\t", b[i][j]);
printf("\n");
}/*end for i loop*/

printf("\nResultant MATRIX\n");
for(i = 0 ; i < m ; i++)
{
for(j = 0 ; j < q ; j++)
printf("%d\t", c[i][j]);
printf("\n");
} /*end for i loop*/

getch();
}/* end main*/

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 12 of 25 BPOPS Lab Programs


7. Compute sin(x)/cos(x) using Taylor series approximation. Compare your result with the
built-in library function. Print both the results with appropriate inferences.

/*Program to compute Sin(x) using Taylor series approximation given by Sin(x) = x -(x3/3!) +
(x5/5!) - (x7/7!) + ....... Compare the result with the built- in Library function and print both the
results.*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int i,degree;
float x,sum=0,term,nume,deno;

printf("Enter the value of degree:");
scanf("%d",&degree);
x=degree*(3.142/180);/* converting degree to radian*/
nume=x;
deno=1;
i=2;

do
{
term=nume/deno;
nume=-nume*x*x; /*multiply by x twice*/
deno=deno*i*(i+1); /* multiply by next and next value*/
sum=sum+term;
i=i+2;
}while(fabs(term)>=0.00001); /*check float absolute to 0.00001*/

printf("the sine of %d is %.2f\n",degree,sum);
printf("the sine function of %d is %.2f:",degree,sin(x));
getch();
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 13 of 25 BPOPS Lab Programs



8. Sort the given set of N numbers using Bubble sort.

#include <stdio.h>
#include<conio.h>
void main()
{
int n,i,j,a[100],temp;
printf("\nEnter the total no. of elements:\n");
scanf("%d",&n);
printf("\nEnter the elements\n");

for(i = 0 ; i < n ; i++) /*read all elements*/
scanf("%d",&a[i]);

for(i = 0 ; i < n-1; i++)
for(j = 0 ; j < n-i-1; j++)
if(a[j] > a[j+1]) /*compare next 2 numbers*/
{
temp = a[j]; /*swap 2 numbers*/
a[j] = a[j+1];
a[j+1] = temp;
}


printf("\nThe Sorted elements are\n");
for(i = 0 ; i < n ; i++) /* display all elements*/
printf("%d\n",a[i]);

getch();
}/* end main*/

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 14 of 25 BPOPS Lab Programs


9. Write functions to implement string operations such as compare, concatenate, and find
string length. Use the parameter passing techniques.

#include<stdio.h> /* string length, concate , compare*/
#include<conio.h>

int slength(char s[])
{
int i;
for(i=0;s[i]!=0;i++);
return (i);
} /*end slength*/

void concat(char s1[100],char s2[100])
{
int len,i;
len=slength(s1);
for(i=0;s2[i]!=0;i++)
s1[len+i]=s2[i];

s1[len+i]=0;
}/*end concate*/

void compare(char s1[100],char s2[100])
{
int l1,l2,i;

l1=slength(s1);
l2=slength(s2);
if(l1!=l2)
printf("Strings are not equal\n");
else
{
for(i=0;i<l1;i++)
if(s1[i]>s2[i])
{
printf("String %s is greater than string %s1\n",s1,s2);
return;
}/*end if*/
else if(s1[i]<s2[i])
{
printf("String %s is smaller than string %s1\n",s1,s2);
return;
}/* else if*/

printf("String %s is equal with string %s\n",s1,s2);
}/* else*/

}/* end compare*/

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Dr. A. Syed Mustafa, HKBKCE. Page 15 of 25 BPOPS Lab Programs


void main()
{
char s1[100],s2[100];
int len;
printf("Enter the first string\n");
gets(s1);
printf("Enter the second string\n");
gets(s2);
len=slength(s1);
printf("Length of '%s' is %d\n",s1,len);
compare(s1,s2);
concat(s1,s2);
printf("concatenated string is %s\n", s1);

getch();
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 16 of 25 BPOPS Lab Programs


10. Implement structures to read, write and compute average- marks of the students, list the
students scoring above and below the average marks for a class of N students.

#include<stdio.h>
typedef struct /* defining structure*/
{
int rollno;
char name[50];
float marks;
}student;

void main()
{
int n,i;
float sum=0,avg;
student s[50]; /* declaring 50 students*/
printf("Enter the total no of students\n");
scanf("%d",&n);

for(i=0;i<n;i++)
{
printf("Enter the student: %d datails:\n",i+1);
printf("Enter the student Rollno:");
scanf("%d",&s[i].rollno);
printf("Enter the student Name:");
scanf("%s",s[i].name);
printf("Enter the marks:");
scanf("%f",&s[i].marks);
sum=sum+s[i].marks;
}
avg=sum/n;
printf("Student details:\n");
printf("Rollno\tName\tMarks\n");
for(i=0;i<n;i++)
{
printf("%d\t",s[i].rollno);
printf("%s\t",s[i].name);
printf("%.2f\n",s[i].marks);
}

printf("Average marks is %.2f\n",avg);

printf("Below average Students details:\n");
printf("Rollno\tName\tMarks\n");
for(i=0;i<n;i++)
{
if(s[i].marks<avg)
{
printf("%d\t",s[i].rollno);

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Dr. A. Syed Mustafa, HKBKCE. Page 17 of 25 BPOPS Lab Programs


printf("%s\t",s[i].name);
printf("%.2f\n",s[i].marks);
} /* end if*/
} /* end for*/

printf("Above average Students details:\n");
printf("Rollno\tName\tMarks\n");
for(i=0;i<n;i++)
{
if(s[i].marks>avg)
{
printf("%d\t",s[i].rollno);
printf("%s\t",s[i].name);
printf("%.2f\n",s[i].marks);
} /* end if*/
} /* end for*/

getch();
} /* end main*/

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 18 of 25 BPOPS Lab Programs


11. Develop a program using pointers to compute the sum, mean and standard deviation of
all elements stored in an array of N real numbers.

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a[10],*ptr,mean,std,sum=0,sumstd=0;
int n,i;

printf("Enter the total numbers\n");
scanf("%d",&n);
printf("Enter the real numbers\n");
for(i=0;i<n;i++)
scanf("%f",&a[i]); /* Reading Input Of N Numbers*/

ptr=a; /*assigning address of array to pointer variable*/
for(i=0;i<n;i++)
sum=sum + *ptr++; /* adding real numbers stored in array through pointer*/

mean=sum/n; /* finding average or mean*/

ptr=a; /*assigning address of array to pointer variable*/
for(i=0;i<n;i++)
{
sumstd=sumstd+pow((*ptr-mean),2); /*finding standard deviation*/
ptr++; /* incrementing pointer to fetch next value*/
}

std=sqrt(sumstd/n); /*finding standard deviation*/

printf("sum=%.2f\n",sum);
printf("Mean=%.2f\n",mean);
printf("standard deviation=%.2f\n",std);
getch( );
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 19 of 25 BPOPS Lab Programs


12. Write a C program to copy a text file to another, read both the input file name and
target file name.

#include<stdio.h>
#include<conio.h>

void main()
{
char ch, fname1[50], fname2[50];
FILE *f1, *f2;
printf("Enter the file name to copy its content(source file)\n");
scanf("%s",fname1);
printf("Enter the file name to write the copied content(target file)\n");
scanf("%s",fname2);
f1= fopen(fname1, "r");
if (fname1 == NULL)
{
printf("Can not read file\n");
exit(0);
}
f2 = fopen(fname2, "w");
if (fname2== NULL)
{
fclose(f1);
printf("Can not write to file\n");
exit(0);
}
while ((ch = fgetc(f1)) != EOF)
fputc(ch, f2);

printf("File copied successfully\n");
fclose(f1);
fclose(f2);

getch( );
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 20 of 25 BPOPS Lab Programs


Additional Programs
1. Write a C program to compute addition, subtraction, multiplication and division on
Complex Numbers.

#include<stdio.h>

struct complex
{
float rp;
float ip;
};

typedef struct complex COMP;


COMP readcomplex()
{
COMP c;
printf("Enter the details of Complex number:\n");
scanf("%f%f",&c.rp,&c.ip);
return(c);
}

COMP addcomplex(COMP c1,COMP c2)
{
COMP c3;
c3.rp=c1.rp+c2.rp;
c3.ip=c1.ip+c2.ip;
return c3;
}

COMP subcomplex(COMP c1,COMP c2)
{
COMP c4;
c4.rp=c1.rp-c2.rp;
c4.ip=c1.ip-c2.ip;
return c4;
}

COMP multicomplex(COMP c1,COMP c2)
{
COMP c5;
c5.rp=c1.rp*c2.rp-c1.ip*c2.ip;
c5.ip=c1.rp*c2.ip+c1.ip*c2.rp;
return c5;
}

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Dr. A. Syed Mustafa, HKBKCE. Page 21 of 25 BPOPS Lab Programs


COMP dividecomplex(COMP c1,COMP c2)
{
COMP c6;
c6.rp=(c1.rp*c2.rp+c1.ip*c2.ip)/(c2.rp*c2.rp+c2.ip*c2.ip);
c6.ip=(c2.rp*c1.ip-c2.ip*c1.rp)/(c2.rp*c2.rp+c2.ip*c2.ip);
return c6;
}

void displaycomplex(COMP c)
{
if(c.ip<0)
printf("%.2f%.2fi\n",c.rp,c.ip);
else
printf("%.2f+%.2fi\n",c.rp,c.ip);
}

int main()
{
struct complex c1,c2,c3,c4,c5,c6;
c1=readcomplex();
c2=readcomplex();
c3=addcomplex(c1,c2);
c4=subcomplex(c1,c2);
c5=multicomplex(c1,c2);
c6=dividecomplex(c1,c2);
printf("Complex number 1 is:\n");
displaycomplex(c1);
printf("Complex number 2 is:\n");
displaycomplex(c2);
printf("Complex number addition is:\n");
displaycomplex(c3);
printf("Complex number subtraction is:\n");
displaycomplex(c4);
printf("Complex number multiplication is:\n");
displaycomplex(c5);
printf("Complex number division is:\n");
displaycomplex(c6);
return(0);
}

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OUTPUT:

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PRINCIPLES OF PROGRAMMING USING C LABORATORY [ BPOPS203 ]




Dr. A. Syed Mustafa, HKBKCE. Page 23 of 25 BPOPS Lab Programs


2. Write a C program to compute Electricity Bill

#include<stdio.h>
typedef struct
{
long telno;
char cname[50];
int units;
float bill;
}Tbill;

int main()
{
Tbill t1;
int fc=250;
printf("Enter the Telephone number\n");
scanf("%d",&t1.telno);
printf("Enter the consumer name\n");
scanf("%s",t1.cname);
printf("Enter the no of units used\n");
scanf("%d",&t1.units);

if(t1.units<=50)
t1.bill=t1.units*1;
else
t1.bill=t1.units*1.5;

t1.bill=fc+t1.bill;

printf("Telephone Bill Details:\n");
printf("Telephone no: %ld\n",t1.telno);
printf("conusmer Name: %s\n",t1.cname);
printf("No of units used: %d\n",t1.units);
printf("Bill Amount: %.2f\n",t1.bill);
return 0;
}
OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 24 of 25 BPOPS Lab Programs


3. Write a C program to convert a string of characters to upper case/lower case.

#include<stdio.h>
#include<string.h>
void main()
{
char s1[100],s2[100];
int len,i;
printf("Enter the first string\n");
gets(s1);

for(i=0;s1[i]!=0;i++) /* getting each char from s1*/
if(s1[i]>='A' && s1[i]<='Z')
s2[i]=s1[i]+32; /* convering to lowercase*/
else if(s1[i]>='a' && s1[i]<='z')
s2[i]=s1[i]-32; /* convering to uppercase*/
else
s2[i]=s1[i]; /*copying other than alpha character to s1 at last*/

s2[i]=0; /* adding null value to string*/

printf("string in upper lower case is %s\n",s2);

getch();
}

OUTPUT:

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Dr. A. Syed Mustafa, HKBKCE. Page 25 of 25 BPOPS Lab Programs


4. Write a C program to check whether a string is palindrome or not.


#include<stdio.h> /* srtring palindrome*/

void main()
{

char s[100];
int len,i,p=1;
printf("Enter the string\n");
scanf("%s",s);

for(i=0;s[i]!=0;i++);
len=i;

for(i=0;i<len/2;i++)
if(s[i]!=s[len-1-i])
{
p=0;
break;
}

if(p)
printf("string %s is palaindrome\n",s);
else
printf("string %s is not a palaindrome\n",s);

getch();
}

OUTPUT: